Jefferson Lab Weekly Briefs

September 9, 2009

12 GeV Upgrade

Major progress is being made on the various physics spectrometer systems. The second 12 GeV Upgrade superconducting magnet contract has been awarded for the Hall B torus magnet. Components for the Hall B CLAS12 preshower calorimeter detector have arrived, and a test set- up is being fabricated. The Hall C project manager convened a peer review of the Super High Momentum Spectrometer detector systems. The user-provided detector designs received uniformly positive remarks, with no recommendations. Assembly of a first article construction module of a major Hall D/GlueX detector, the Forward Drift Chamber, has begun here at JLab.

Physics

In Hall A, experiment E05-109, HAPPEx-III, a measurement of the nucleon strange form factors at high Q2, has completed its commissioning phase, both at one and at three pass. The experiment has started taking production data.

Accelerator

Overall, the accelerator was running well with low trip rates. High current (100 μA) was sent to Hall A whenever the hall requested it. On Thursday, more than 10 hours were spent to commission cryomodule 1L04. On Sunday, a failed UPS (uninterruptible power supply) dropped the North Linac to restricted access. In addition, iocse20 was not stable and the software group has been investigating it. Some magnets, radiofrequency cavities and a separator also caused downtime.

Free-Electron Laser

The FEL team resurrected the gun with gas processing and the machine is running again, although the voltage has been lowered to 325kV to reduce risk. In parallel, preparations are being made for replacement of the faulty ceramic with a new one that has bulk conductivity to eliminate the vacuum punch throughs. The FEL provided some beamtime for terahertz work, and staffers completed the draft proposal for the JLAMP amplifier. The proposal is now out to the technical committees for review.

JLab's Safety Numbers

56 Days since Last Recordable Accident (JLab record: 331)
364 Days since Last Lost Workday Accident (JLab record: 676)

Environment, Safety, Health & Quality

In virtually everyone's job, some lifting is required. Any activity that involves lifting carries potential for injury. Remember, when in doubt about your ability to safely lift an object, get help. Consider following these pointers:

Prepare: Make sure the path you will use is free of obstructions and slipping hazards. Wear appropriate personal protective equipment, such as gloves and safety shoes.

Lift: Face the load with feet about shoulder-width apart, one foot slightly ahead of the other. Bend at the knees and keep the back straight (not vertical, but in a forward lean). Grasp the load and draw it close to the body, with arms and elbows tucked to the sides. Lift the load gradually and smoothly.

Move: Move steadily and slowly, keeping the load close to the body and balanced. Turn the entire body when changing direction. When walking through doorways, adjust your grip or turn the load slightly so that fingers won't be trapped between the load and the doorway surface.

Place: To lower the load, reverse the lifting steps: bend the knees, keep the back straight, and keep your feet in the proper position. If the load must be placed at shoulder height or above, plan to rest it at about waist height and change the grip before completing the lift. Remember, the basic rule is to let the leg muscles, not the back, do the work.

Announcements

Colloquium Set for Today Has Been Rescheduled for Oct. 1
A special colloquium, High-Field Losses in SRF Cavities, will be presented by Gianluigi Ciovati, Accelerator Division SRF Institute and recipient of the Presidential Early Career Award for Scientists and Engineers on Thursday, Oct. 1 from 3:30 to 4:30 p.m. in the CEBAF Center auditorium. Note that this colloquium has been re-scheduled from its original date: today, Sept. 9.

Don't Forget to RSVP for JLab 25th!
The deadline for RSVPs to the JLab 25th Anniversary event and lunch is tomorrow, Sept. 10. You may RSVP online. As a reminder, the cafeteria will be closed for lunch the day of the festivities.

New Standard Operating Procedure for Transporting Hazardous Materials
DOE now requires all of its research laboratories and facilities, including JLab, to write its own procedure for transporting Hazardous Materials onsite or to follow 49CFR parts 171 to 180. JLab chose to write its own plan, which has been approved by DOE – Standard Operating Procedure (SOP) FML-09-001-SOP – Transportation of Hazardous Materials. Everyone onsite must follow this SOP any time they are transporting or moving hazardous materials on the JLab campus. Standard Operating Procedures (SOPs) are found posted on Docushare.

No Puttering Around: Register Now for Oct. 8 Golf Tourney
Dust off those clubs! It's time for the JLab 2009 Fall Golf Tournament. The event will be held Thursday, Oct. 8, at the Golden Horseshoe Golf Club (Green Course) in Williamsburg. Teams must have at least two JLab employees. Registration for JLab employees is $50 and for non-JLab employees is $65. To sign up, see Mike Zarecky, ARC 500/47. When you sign up, you must list your average score for 18 holes. Make checks payable to Mike Zarecky. The deadline for registering for the tournament is Friday, Oct. 2. If you have any questions, contact Danny Machie, x7501 or Mike Zarecky, x7609.

JLab Adopt-A-Spot Litter Pick Up Set For Sept. 18
The next JLab Adopt-A-Spot Litter Pick up will be Friday, Sept. 18. Everyone at JLab is invited to take part in this community service project. Sign up on the webpage in advance so adequate supplies can be provided. Litter pick up will cover the sidewalk and grass areas paralleling Jefferson Avenue, from the JLab property line just south of Onnes Drive to Oyster Point Road. Meet in the CEBAF Center lobby at 11:15 a.m. for a short safety briefing, trash bags and to get area assignments. Wear comfortable clothes; long-sleeved shirt, long pants and sturdy shoes and gloves are best. More information and an electronic volunteer signup sheet is available online. If you have questions, contact Deb Magaldi, x5102.